<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>target</title>
</head>
<body>

<h1 th:text="${requestScope}">request域中的数据</h1>
<h1 th:text="${session.sessionScope}">session域中的数据</h1>
<h1 th:text="${application.applicationScope}">application域中的数据</h1>
</body>
</html>